Jacob haish



(No-litlodel.)

J. HAISH. NAIL.'

10.428,091. Patented May zo, 1890.

NTTED STATES PATENT OFFICE.

JACOB IIAISH, OF DE KALB, ILLINOIS.

NATI..

SPECIFICATION ,forming pm of Letters Patent 110,428,091, dated May 2o, 1890.

Application tiled December 17, 1889. Serial No. 334,022. (No model.)

.To all whom/it 17mg/ concern: l

Be it known that l, JACOB HAISH, a citizen of the United States, residing at De Kalb, in the county of De Kalb and State of Illinois, have invented certain new and useful Improvements in Nails; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had 4to the accompanying drawings, and te the letters vof reference marked thereon, which form a part of this specification.

My invention has reference to improve'- ments in nails; and it consists in a novel conformation ofthe point, the main pertionand the head of the nail.

My invention is more particularly applicable to finishing nails Where it is essential that the head be sunk into the wood, so as to be Hush with or a little below the surface of the latter.

` The object of my invention .is to provide a nail which shall have straight sides parallel with the grain of the wood, so as to exert no wedging or splitting influence upon the wood during the process of being driven.

. A further object of my invention is to give the nail a longer cross-diameter in one direction, so that when the nail is once set with its longest cross-diameter parallel with the grain ot the wood it will not turn during the process of driving.

A further object of my invention is to furnish the nail with a projecting edge or head, and also to form the underlying portion of said head into a cutting-edge, by means of which said head will cut its way into the wood without bruising the latter.

The object of projecting the head of the nail, as above suggested, is to enable the aforesaid curved cutting-edges formed under the head, to pass into the material in the line of the grain by opening the latter sufficiently to admit the head and not bruise or lnanglethe grain of the wood, as would be the ease did the head force itself into the material across the grain.

The conformation of tho periphery of the main portion of the nail is not material so long as the greatest diameter is in the line o'f the wood. Thereforethe sides E of the nail may be oval,-an'gular. `or the sides thereof fiat.

ln the drawings, Figure l is a representation of a nail embodying my invention, the sides whereof are half-oval. Fig. 2 is the same with'the exception `that the sides E of the nail are angular. Fig. 3 exhibits a -further modification of flat straight sides.

alterdsfear rrcdghig-srrrtaces l'raving cntti ng extremities, the main two of which are in theline of the grain of the wood, Aand vtherefore readily enter the latter. i

As the nail is of a generally elliptical shape in cross-section, as indicated in Figs. 1 and 2, but having its ends in a degree pointed or sharpened, and also comparativelynarrow in the direction perpendicular to the grain of the woodvery little transverse displacement of the material is required,and the most widelyseparated edges being in the line of the grain effect an entrance for the main portion of the nail by merely widening the grain of the wood.

C is t-he head of the nail, which is formed ,fiat upon its upper surface and projects slightly beyond the most widely-separated` edges of the nail. The projections D of the head C are inclined inwardly from the extremity of the head to their junction with the main portion of thenail. The projections D are also formed into a cutting-edge, and from the fact of the inclination or curvature aforesaid, when the head of the nail is about to enter the wood, the first contact therewith is at the lower portion of the cutting-edges D, and the further forcing of the naill results in a wedged eut for .the reception of the head, said cut being, as aforesaid, in the line of' the grain of the material. -By this means the head is entirely sunk into the material, either flush with or below the Surface of the latter', y

as may be desired, and this without mangling the material adjacent to said head. The width of the head C is ibut slightly greater than that of the main portion of the nail, and

ice

this excess of width of the aperture to admit the entrance ot the head C is eliected bythe elasticity of the material and also Without any fracture thereoso that when the nail is driven home the adjacent openingin the material will be of the exact conformation and size of the contiguous portion of the head C, and the finished appearance will be that of the material lying smootlilyand closelyaround the periphery of the head C, as shown in Fig. 4.

The provision of two projections D gives the nail A double the engaging capacity of the ordinary brad, and the sharp circular form of the projections D avoids the usual mangling of the material which obtains in the use of the larger-sized brads.

In Fig. 5 are exhibited the inner faces of the form ol' die used for drawing the nail A and head C, in which the main portion of 'the form made fiat, straight, or angular, as may be desired, and the upper portion of the nail is given the conformation desired for the head,

including the aforesaid curved cutting surfaces andprojections.

What I claim asm y invention, and desire to secure by Letters Patent of the United States.

1. As. an article of manufacture, thenailA,

of a generally elliptical shape in cross-section,

provided with parallel sides E, elongated head C,and underlying curved cutting projections D, substantially as shown, and for the pur pose described.

2., As an article of manufacture, the nail A, of a generally elliptical shape in cross-section, provided with converging Wcdging sides B, the elongated head C, and curved cutting pro jections D, substantialy as shown, and for the purpose described.

3. The nail A, of a generally elliptical shape in cross-section, formed with its longest diameter adapted to be placed in the line of the grain of the wood, the projections l) having an underlying curved cutting-surface uniting the extremity of the head C with the main portion of the nail, and thereby adapted to gradually out an opening in the material for the sinking of said head, substantially as shown, and for the purpose described.

In testimony whereof I ailix my signature in presence of two witnesses.

JACOB IIAlSll.

Witnesses:

CHARLES; 1i'. SALISEURY, SAML. P. BRADSHAW. 

